曹京京,王忠伟.不同冻融循环次数下胶凝砂砾石抗冻性能的试验研究[J].水电能源科学,2018,36(9):127-129
不同冻融循环次数下胶凝砂砾石抗冻性能的试验研究
Experimental Study on Anti freeze Properties of Cemented Sand Gravel
  
DOI:
中文关键词:  胶凝砂砾石  水胶比  抗冻性能  养护龄期  抗压强度
英文关键词:cemented sand gravel  water binder ratio  frost resistance  curing age  compressive strength
基金项目:河南省教育厅科研项目资助计划(18B570006)
作者单位
曹京京,王忠伟 黄河水利职业技术学院 河南 开封 475004 
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中文摘要:
      为研究胶凝砂砾石的抗冻性能,做了不同水胶比和养护龄期的标准试件的室内试验,研究了不同冻融循环次数下试件的抗压强度。结果表明,水胶比由0.6增大至1.4时,胶凝砂砾石抗压强度先增大后减小;水胶比为1.0时,胶凝砂砾石抗压强度最大。经历冻融作用后,水胶比为1.0的胶凝砂砾石试件的抗压强度仍最大。不同养护龄期下胶凝砂砾石的抗压强度差别较大,养护龄期越长,冻融循环作用后的抗压强度越大。〖JP2〗相同冻融循环次数下,养护龄期为28 d的胶凝砂砾石比养护龄期为7 d的胶凝砂砾石的抗压强度高出57%~〖JP〗76%左右。
英文摘要:
      In order to study the freeze resistant properties of cemented sand gravel, the compressive strength under different freeze thaw cycles was studied by using indoor test for standard samples with different water binder ratio and curing age. The results show that the compressive strength of cemented sand gravel increases first and then decreases with the water binder ratio increases from 0.6 to 1.4. The compressive strength of cemented sand gravel is the largest when the water binder ratio is 1.0, even at the action of freeze thaw. The compressive strength of cemented sand gravel varies greatly under different curing ages. Under different freeze melt cycles, the compressive strength of cemented sand gravel with a maintenance age of 28 days is about 57% 76 % higher than that with a maintenance age of 7 days.
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